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230853137 = 297960453
BaseRepresentation
bin11011100001010…
…00101000010001
3121002101112222012
431300220220101
5433044300022
634523552305
75502135134
oct1560505021
9532345865
10230853137
11109346419
126538b695
1338a9a6b8
142293421b
1515400de2
hexdc28a11

230853137 has 4 divisors (see below), whose sum is σ = 238813620. Its totient is φ = 222892656.

The previous prime is 230853127. The next prime is 230853157. The reversal of 230853137 is 731358032.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 189585361 + 41267776 = 13769^2 + 6424^2 .

It is a cyclic number.

It is not a de Polignac number, because 230853137 - 210 = 230852113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230853127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3980198 + ... + 3980255.

It is an arithmetic number, because the mean of its divisors is an integer number (59703405).

Almost surely, 2230853137 is an apocalyptic number.

It is an amenable number.

230853137 is a deficient number, since it is larger than the sum of its proper divisors (7960483).

230853137 is an equidigital number, since it uses as much as digits as its factorization.

230853137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7960482.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 230853137 is about 15193.8519474161. The cubic root of 230853137 is about 613.4491845259.

The spelling of 230853137 in words is "two hundred thirty million, eight hundred fifty-three thousand, one hundred thirty-seven".

Divisors: 1 29 7960453 230853137